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Date: Fri, 28 Sep 2012 09:31:15 -0700
From: tip-bot for Arnaldo Carvalho de Melo <acme@...hat.com>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, eranian@...gle.com, paulus@...ba.org,
acme@...hat.com, hpa@...or.com, mingo@...nel.org,
peterz@...radead.org, efault@....de, namhyung@...il.com,
jolsa@...hat.com, fweisbec@...il.com, dsahern@...il.com,
tglx@...utronix.de
Subject: [tip:perf/core] perf evlist: Introduce set_filter() method
Commit-ID: 745cefc5fba4350243bcb63cd6f75fb47ca77725
Gitweb: http://git.kernel.org/tip/745cefc5fba4350243bcb63cd6f75fb47ca77725
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Wed, 26 Sep 2012 15:07:39 -0300
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 26 Sep 2012 15:08:43 -0300
perf evlist: Introduce set_filter() method
To apply a filter to all the evsels in an evlist.
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Mike Galbraith <efault@....de>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/util/evlist.c | 43 +++++++++++++++++++++++++------------------
tools/perf/util/evlist.h | 2 ++
tools/perf/util/evsel.c | 18 ++++++++++++++++++
tools/perf/util/evsel.h | 3 +++
4 files changed, 48 insertions(+), 18 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index c3ec787..ae89686 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -668,30 +668,37 @@ void perf_evlist__delete_maps(struct perf_evlist *evlist)
int perf_evlist__apply_filters(struct perf_evlist *evlist)
{
- const struct thread_map *threads = evlist->threads;
- const struct cpu_map *cpus = evlist->cpus;
struct perf_evsel *evsel;
- char *filter;
- int thread;
- int cpu;
- int err;
- int fd;
+ int err = 0;
+ const int ncpus = cpu_map__nr(evlist->cpus),
+ nthreads = evlist->threads->nr;
list_for_each_entry(evsel, &evlist->entries, node) {
- filter = evsel->filter;
- if (!filter)
+ if (evsel->filter == NULL)
continue;
- for (cpu = 0; cpu < cpus->nr; cpu++) {
- for (thread = 0; thread < threads->nr; thread++) {
- fd = FD(evsel, cpu, thread);
- err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter);
- if (err)
- return err;
- }
- }
+
+ err = perf_evsel__set_filter(evsel, ncpus, nthreads, evsel->filter);
+ if (err)
+ break;
}
- return 0;
+ return err;
+}
+
+int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter)
+{
+ struct perf_evsel *evsel;
+ int err = 0;
+ const int ncpus = cpu_map__nr(evlist->cpus),
+ nthreads = evlist->threads->nr;
+
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ err = perf_evsel__set_filter(evsel, ncpus, nthreads, filter);
+ if (err)
+ break;
+ }
+
+ return err;
}
bool perf_evlist__valid_sample_type(struct perf_evlist *evlist)
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 25e49e0..3f1fb66 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -72,6 +72,8 @@ int perf_evlist__set_tracepoints_handlers(struct perf_evlist *evlist,
#define perf_evlist__set_tracepoints_handlers_array(evlist, array) \
perf_evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array))
+int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
+
struct perf_evsel *
perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index c78e42a..6022daa 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -505,6 +505,24 @@ int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
return evsel->fd != NULL ? 0 : -ENOMEM;
}
+int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
+ const char *filter)
+{
+ int cpu, thread;
+
+ for (cpu = 0; cpu < ncpus; cpu++) {
+ for (thread = 0; thread < nthreads; thread++) {
+ int fd = FD(evsel, cpu, thread),
+ err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter);
+
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
{
evsel->sample_id = xyarray__new(ncpus, nthreads, sizeof(struct perf_sample_id));
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 60d2885..25043ff 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -115,6 +115,9 @@ void perf_evsel__free_fd(struct perf_evsel *evsel);
void perf_evsel__free_id(struct perf_evsel *evsel);
void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
+int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
+ const char *filter);
+
int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
struct cpu_map *cpus);
int perf_evsel__open_per_thread(struct perf_evsel *evsel,
--
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